Fixed sanitization of full page IDs with accidental parse of escaped hex character in dirtify_page_id(). Thanks Asterion; see http://forum.enanocms.org/post/20/
.mceItemFlash {
border: 1px dotted #cc0000;
background-image: url('../images/flash.gif');
background-position: center;
background-repeat: no-repeat;
background-color: #ffffcc;
}